The return value of _Swap() is often treated as a "don't care" value and thus
often ignored. However, there are cases when it is desirable to have a
meaningful return value. This meaningful value can be assigned via
fiberRtnValueSet(). To that end, a new field has been added to the coop
register struct to store this value for when _Swap() needs to return that
meaningful value.
Change-Id: Ic4967fa7d602850c09ebde18e8bfd4c97cda9ec8
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
For this implementation, the presence of a value in global
_offload_routine signifies to the exception code that we should
enter the IRQ handling code even if there are no bits enabled
in ipending. The 'trap' instruction gets us into the exception
handling code.
Change-Id: Iac96adba0eaf24b54ac28678a31c26517867a4d2
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
We check to see if the stack pointer is somwhere on the
interrupt stack.
Change-Id: Ic9d21e9f03476b9c8955c44cbfa2e61dd1daed22
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Required by microkernel, currently does nothing.
Change-Id: I256886e3a52817d9216599bbf5691bc27c1d0ad8
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
With this code we can successfully boot and context switch into
the main thread. Nanokernel hello_world has the expected
"Hello World!" string in the RAM console.
Change-Id: I56335d992f5a7cbb12d9e4c02d1cc23ea28ae6ef
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Basic build framework for Nios2. Everything is stubbed out,
we just want to have a build going so that we can start to
parallelize implementation tasks.
This patch is not intended to be functional, but should be
able to produce a binary for all the nanokernel-based
sanity checks.
Change-Id: I12dd8ca4a2273f7662bee46175822c9bbd99202a
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Andrew Boie